. >> reporter: the smart phones must have nsc technology like the samsung galley and be loaded with the program designed to rip off transit agencies. my smart phone doesn't have that. if it did, i would take my limited yous card, touch it to the phone, and it would reload additional rides on the car for free. then i could walk right through the toll gates and ride for free. the transportation commission has known about this problem for more than a year. so far, few riders if any have taken advantage of the flaw. >> there are thousands of limited use ticketing used every day, and over the course of the past six month, we've seen possibly one instance of abuse. >> reporter: in that one instance, it was on the golden gate ferry. >> if we detect there is abuse to the system, we'll make adjustments. >> reporter: the options include discontinuing the limited use cards, which is unlikely. more likely would be prohibiting them from being reloaded, or allowing each card to be used for a limited period of time. >>> highs today were close to yesterday. we didn't see a whole lot of change, but that